Circuit breaker switch equipment with low partial discharge

Abstract

The utility model provides a low partial discharge circuit breaker switch device, comprising two symmetrically arranged insulating mounting plates, the bottoms of the outer sides of the two insulating mounting plates are respectively provided with a shield and a seal cover, a plurality of separator plates and guard plates are arranged between the two insulating mounting plates in a crossing manner, and a vacuum arc-extinguishing chamber is arranged between the two adjacent guard plates. A plurality of inserting grooves are formed in the tops of the insulating mounting plates, inserting parts are arranged at the front end and the rear end of the partition plate, the inserting parts are inserted into the inserting grooves, inner grooves are formed in the surfaces of the inserting parts, limiting pieces are embedded in the inner grooves, a plurality of supporting frames are embedded in the middles of the two insulating mounting plates, and the vacuum arc extinguish chamber is erected at the tops of the supporting frames. The top of the vacuum arc-extinguishing chamber is connected with the separator plate, and the surface of the insulating mounting plate is provided with a plurality of clamping grooves. According to the utility model, the insulating mounting plate is adopted, and the components are mounted and fixed in a plugging or clamping manner, so that all-insulating mounting without adopting a metal mounting plate and screws is formed, and the problem of partial discharge of the circuit breaker switch is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of switchgear, and particularly relates to a circuit breaker switchgear with low partial discharge. Background Technique

[0002] The problem of partial discharge in switchgear is a major problem that plagues switchgear. In environmental protection cabinets, switches mostly use metal supports to support vacuum interrupters. When the vacuum interrupter is opened and closed, it needs to bear a large force, which requires the metal parts to have greater rigidity. This results in relatively large metal parts, and there are a large number of sharp tips on metal mounting plates and mounting screws, etc., which are prone to discharge, the partial discharge of the switch is unqualified, and the safety is relatively low. Content of the Utility Model

[0003] The utility model aims to provide a circuit breaker switchgear with low partial discharge to solve the problems raised in the above background technique.

[0004] To achieve the above object, the utility model provides the following technical solutions:

[0005] A circuit breaker switchgear with low partial discharge includes an installation mechanism. The installation mechanism includes two symmetrically arranged insulating mounting plates. At the outer bottom of both insulating mounting plates, a shield and a cover are installed. A number of partition plates and protection plates are cross - arranged between the two insulating mounting plates. A vacuum interrupter is arranged between two adjacent protection plates. A number of insertion slots are arranged at the top of the insulating mounting plates. Insertion parts are arranged at the front and rear ends of the partition plates, and the insertion parts are inserted into the insertion slots. Inner grooves are arranged on the surfaces of the insertion parts, and limiting parts are embedded in the inner grooves. A number of support frames are embedded in the middle of the two insulating mounting plates. The vacuum interrupter is mounted on the top of the support frames. The top of the vacuum interrupter is connected to the partition plate. A number of card slots are arranged on the surfaces of the insulating mounting plates. A number of card plates are arranged at the front and rear ends of the protection plate, and the card plates are respectively clamped into the card slots.

[0006] Preferably, a number of three - phase supports are arranged at the bottom between the insulating mounting plates. A hexagonal shaft penetrates through the three - phase supports. Three - phase crank arms are arranged on both sides of the three - phase supports. A screw is arranged at the bottom of the vacuum interrupter. A guide pull rod is connected to the bottom of the screw. A contact spring is sleeved on the guide pull rod. Rollers are arranged on both sides of the bottom of the guide pull rod. Moving grooves are arranged at the tops of the three - phase crank arms, and the rollers are movably arranged in the moving grooves.

[0007] Preferably, card holes are arranged on both sides of the bottom of the connecting plate. One - end of the shield and the cover are provided with buckles, and the buckles are clamped into the card holes.

[0008] Preferably, a plurality of umbrella skirt sleeves are provided on the hexagonal shaft, and the plurality of umbrella skirt sleeves are respectively spaced between the plurality of three-phase brackets.

[0009] Advantageous effects

[0010] One or more of the above technical solutions in the low partial discharge circuit breaker switchgear provided by the embodiments of the present invention have at least one of the following technical effects:

[0011] Through the above technical solutions, by installing and fixing the components in a plugging or clamping manner, it is not necessary to use the installation method of a metal mounting plate and screw structure, solving the problem in the prior art that the metal parts have a relatively large shape, and there are a large number of tips on the metal mounting plate products and mounting screws, which are prone to discharge, resulting in unqualified partial discharge of the switch. Thus, the partial discharge problem of the circuit breaker switch is greatly improved. Moreover, the exposed parts of the main circuit copper parts are shielded by shields and covers. By arranging a plurality of umbrella skirt sleeves at intervals on the hexagonal shaft, the creepage distance is increased, further improving the overall insulation performance and greatly ensuring the safety of the circuit breaker switchgear. Brief description of the drawings

[0012] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0013] Figure 2 is a schematic diagram of the side sectional structure of the present invention;

[0014] Figure 3 is a schematic diagram of the insulation mounting plate structure of the present invention;

[0015] Figure 4 is a schematic diagram of the partition structure of the present invention;

[0016] Figure 5 is a schematic diagram of the guard plate structure of the present invention;

[0017] Figure 6 is a schematic diagram of the shield and cover structure of the present invention;

[0018] Figure 7 is a schematic diagram of the hexagonal shaft and vacuum interrupter structure of the present invention;

[0019] Figure 8 is Figure 1 the enlarged structure schematic diagram at A of

[0020] The corresponding relationship between the reference numerals and the component names in the drawings is as follows:

[0021] 1. Insulating mounting plate; 2. Protective cover; 3. Cover; 4. Partition board; 5. Protective plate; 6. Vacuum interrupter; 7. Insertion slot; 8. Insertion part; 9. Inner slot; 10. Limiting part; 11. Support frame; 12. Card slot; 13. Card board; 14. Three-phase support; 15. Hexagonal shaft; 16. Three-phase toggle arm; 17. Guide pull rod; 18. Contact compression spring; 19. Roller; 20. Movable slot; 21. Card hole; 22. Snap; 23. Umbrella skirt sleeve. Detailed implementation manner

[0022] The technical solutions of the present utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative work shall fall within the protection scope of the present utility model.

[0023] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0024] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0025] As Figure 1-8 shown, it is a structural schematic diagram of a low partial discharge circuit breaker switch device according to a preferred embodiment of the present utility model;

[0026] In this embodiment, there are two symmetrically arranged insulating mounting plates 1. Both of the two insulating mounting plates 1 are integrally made of insulating materials. At the outer bottom of each of the two insulating mounting plates 1, a shield 2 and a cover 3 are installed. The cover 3 and the shield 2 are respectively installed in the intervals for installing the screws of the three-phase toggle arm 16 and for installing the flexible connection. The exposed part of the main circuit copper parts is shielded by the shield 2 and the cover 3. Between the two insulating mounting plates 1, a number of partition plates 4 and guard plates 5 are arranged at equal intervals and crosswise. A vacuum interrupter 6 is arranged between every two adjacent guard plates 5. At the top of the insulating mounting plate 1, a number of insertion slots 7 are arranged at equal intervals. At the front and rear ends of the partition plate 4, insertion parts 8 are provided. The insertion parts 8 are inserted into the insertion slots 7. Inner grooves 9 are arranged on the surfaces of the insertion parts 8. Limiting parts 10 are embedded in the inner grooves 9. The limiting parts 10 are used to limit the insertion parts 8. In the middle of the two insulating mounting plates 1, a number of support frames 11 are embedded. The vacuum interrupter 6 is mounted on the top of the support frames 11. The top of the vacuum interrupter 6 is connected to the partition plate 4. A number of card slots 12 are arranged on the surfaces of the insulating mounting plates 1. At the front and rear ends of the guard plate 5, a number of card plates 13 are provided. The card plates 13 are respectively clamped into the card slots 12. Through the connection by the clamping or insertion of each component, an installation method without using a metal mounting plate and a screw structure is realized.

[0027] In this embodiment, at the bottom between the insulating mounting plates 1, a number of three-phase supports 14 are provided. A hexagonal shaft 15 penetrates through the three-phase supports 14. On both sides of the three-phase supports 14, three-phase toggle arms 16 are provided. The three-phase toggle arms 16 are used to drive the switch to open and close. A screw rod is arranged at the bottom of the vacuum interrupter 6. A guide pull rod 17 is connected to the bottom of the screw rod. A contact spring 18 is sleeved on the guide pull rod 17. On both sides of the bottom of the guide pull rod 17, rollers 19 are provided. Activity slots 20 are arranged at the tops of the three-phase toggle arms 16. The rollers 19 are movably arranged in the activity slots 20. This mechanism drives the switch to realize the opening and closing functions. The over-travel compression of the switch is realized by the spring cover compressing the contact spring 18.

[0028] In this embodiment, a number of card holes 21 are arranged at the bottom of the insulating mounting plate 1. At one end of each of the shield 2 and the cover 3, a buckle 22 is provided. The buckle 22 is clamped into the card hole 21. The installation and fixation of the shield 2 and the cover 3 are realized through this structure.

[0029] In this embodiment, a number of umbrella skirt sleeves 23 are arranged on the hexagonal shaft 15. The umbrella skirt sleeves 23 are respectively spaced between the three-phase supports 14. The umbrella skirt sleeves 23 are made of silica gel material, which can increase the creepage distance and ensure insulation safety.

[0030] A low partial discharge circuit breaker switchgear of the present utility model has an installation method, a connection method, or a setting method that are all common mechanical methods, and any implementation that can achieve its beneficial effects can be carried out.

[0031] The technologies not described in detail in the present utility model are all well-known technologies. Those skilled in the art can conveniently implement the present utility model on the basis of understanding this specification, and the content shown in the drawings is a part of this specification.

[0032] The above content further elaborates on the present utility model in combination with specific implementation manners. It cannot be determined that the specific implementation of the present utility model is only limited to these descriptions. For those of ordinary skill in the technical field to which the present utility model belongs, without departing from the concept of the present utility model, several simple deductions or substitutions can still be made, and all should be regarded as belonging to the protection scope determined by the claims submitted for the present utility model.

Claims

1. A low partial discharge circuit breaker switchgear, characterized in that: The invention comprises two symmetrically arranged insulating mounting plates (1), wherein a protective cover (2) and a sealing cover (3) are installed on the outer bottom of the two insulating mounting plates (1), a plurality of partitions (4) and protective plates (5) are cross-arranged between the two insulating mounting plates (1), a vacuum arc extinguishing chamber (6) is arranged between two adjacent protective plates (5), a plurality of plug-in slots (7) are arranged on the top of the insulating mounting plates (1), and plug-in parts (8) are arranged at the front and rear ends of the partitions (4), and the plug-in parts (8) are plugged into the plug-in slots (7). 8) are provided with inner grooves (9) on the surface, and limit members (10) are embedded inside the inner grooves (9). A plurality of support frames (11) are embedded in the middle of the two insulating mounting plates (1). The vacuum arc extinguishing chamber (6) is mounted on the top of the support frame (11), and the top of the vacuum arc extinguishing chamber (6) is connected to the partition (4). A plurality of card grooves (12) are provided on the surface of the insulating mounting plate (1), and a plurality of card plates (13) are provided at the front and rear ends of the protective plate (5), and the plurality of card plates (13) are respectively embedded in the plurality of card grooves (12).

2. A low partial discharge circuit breaker switch device according to claim 1, characterized in that: A plurality of three-phase brackets (14) are provided at the bottom between the insulating mounting plates (1), a hexagonal shaft (15) is passed through the three-phase brackets (14), three-phase turning arms (16) are provided on both sides of the three-phase brackets (14), a screw is provided at the bottom of the vacuum arc extinguishing chamber (6), a guide rod (17) is connected to the bottom of the screw, a contact compression spring (18) is mounted on the guide rod (17), rollers (19) are provided on both sides of the bottom of the guide rod (17), and a movable groove (20) is provided at the top of the three-phase turning arm (16), and the roller (19) is movably arranged in the movable groove (20).

3. A low partial discharge circuit breaker switch device according to claim 1, characterized in that: The bottom of the insulating mounting plate (1) is provided with a plurality of snap holes (21), and one end of each of the protective cover (2) and the sealing cover (3) is provided with snap buckles (22), and the snap buckles (22) are snapped and embedded in the snap holes (21).

4. A low partial discharge circuit breaker switch device according to claim 2, characterized in that: A plurality of shed skirt sleeves (23) are provided on the hexagonal shaft (15), and the plurality of shed skirt sleeves (23) are respectively spaced between the plurality of three-phase brackets (14).

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